Official figures showed today that the Con-Dem asuterity drive has left Britain teetering on the brink of a dreaded triple-dip recession.
The Office for National Statistics said January's manufacturing output was down 1.5 per cent on the precious month and 3 per cent on January 2012
And total exports have crashed by 3.5 per cent - leaving Britain's businesses £900 million out-of-pocket.
That saw the economy contract by a worse-than-expected 0.3 per cent and has sent the value of the pound plummeting to a two-and-a-half-year low.
Economists warned a further fall in economic performance in the next quarter will put Britain back in recession and trade unions are turning up the heat on Chancellor George Osborne to deliver a Budget for growth on March 20.
Unison general secretary Dave Prentis is among the speakers at tomorrow's TUC pre-Budget rally in Westminster.
He said the gloomy economic forecasts were yet more evidence that the government's cuts agenda is holding back growth.
But he added that giving public-sector workers a decent pay rise could see high-street spending soar and give a timely boost to "beleaguered" shops and businesses across Britain.
"The Prime Minister must put the interests of the country first and initiate a programme of public spending to get the economy working again and avoid a triple-dip recession made in Downing Street," he said.
"We know that public-service jobs have been cut too far too fast - lift the threat of unemployment and people will start buying again - boosting manufacturing."
Unite assistant general secretary Tony Burke added that Mr Osborne's "promise of a march of the makers was a work of fiction by a poor author" and demanded he delivered a "game-changing" budget.
"It would be foolish for the Chancellor to bank on the service sector to rescue the economy," said Mr Burke.
"As part of the budget, Britain needs a strategic manufacturing plan but the government seems a long way from developing one. The government's 'cross your fingers and hope for the best' strategy is predictably failing."